检索结果-南通市图书馆

Petrogenesis of the mayo-darley tin formations,anorogenic complex of the Cameroon Line:implication for tin deposit

Acta Geochimica 2023年第4期42卷 704-725页

作者： Ndema Mbongué Jean Lavenir Ndongfong Edson Fuh Emmanuel Eseya Mengu Junior Department of Geology Faculty of SciencesUniversity of BueaP.O.Box 63BueaCameroon Department of Earth Sciences Faculty of SciencesUniversity of Yaounde IP.O.Box 812YaoundéCameroon

The mayo-darley massif is an anorogenic complex of the Cameroon Line that has a mantle ***-bearing rocks were analyzed by ICP-AES and INAA analytical *** purpose of this work was to provide new geochemical data for the mayo-darley tin formation and to understand its petrogenesis and the origin of tin *** mayo-darley tin deposit is made up of tin-granite,and tin-greisen,greisenification was developed on the borders of quartz *** rocks belong to the alkaline series and were classified into acid(SiO2-=61.6%–73.8%;65.4%–98%respectively)and basic(42.9%–47%SiO_(2))*** showed enrichment in HSFE,LILE,Ga/Al and chondrite normalized REE patterns indicating LREE enrichment relative to HREE with a negative Eu anomaly,only sample SB8 of tin-granite showed Eu/Eu*=*** display metaluminous,peralkaline,peraluminous,ferroan,high-K calc-alkaline to shoshonitic,alkalic to calcic affinity,and crystallized at800°*** chemistry of this deposit reflects the primary composition of granite,quartz monzonite,gabbro,and foid *** complex experienced multi-stage sub-solidus hydrothermal fluid reactions and shows variable alteration of feldspars alkali *** rocks are classified as A1-type granite,overlap with the OIB field,and were derived from a within-plate setting,similar to mantle non plumederived *** origin of tin mineralization in mayodarley has a complex evolution,tin mineralization was derived from hydrothermal and hydrogenous metal-rich deposits and shows Sn–Hf–Zr and Sn–Tl–Nb *** new data confirm the complexity of the mayo-darley tin complex and elucidate the origin of tin mineralization.

关键词： mayo-darley Massif Cameroon Line Tingranite Tin-bearing greisen A1-type granite Sn–Hf–Zr Sn–Tl–Nb

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：